wiley



E. C. WILEY,

SMOKELESS BOILER.

APPLlcArloN FILED JUNE 20.1918.

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A l 1 1 r 1 4 l l l a l WITNEs'sEs ATTOR N EY E. C. WILEY.

SMOKELESSVBOILER.

'APPucATxoN H11-:n 1uNE2o, 1918.

Patented Oct. 7,1919.

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WITNESSES ATTO R N EY E. C. WILEY.

S'NIOKELESS BOILER.

APPLICATION FILED IuNE 20,19III.

Patented Oct. 7, 1919.

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FFE@ SWTES PATENT @FFQE EDGAR C. WILEY, 0F LYNCHBURG, VIRGINIA,`ASSIGNOR OF'ONE-THIRD TO ERNEST J. F. WILSON, 0F LYNCHBURG, VIRGINIA.

SMOKELESS BOILER.

Specification of Letters Patent.

Patented Oct. 7, 1919.

To all whom t may concern.'

Be it known that I, EDGAR C. VViLnY, a citizen of the United States, residing at Lynchburg', in the county of Campbell and State of Virginia, have invented a new and useful Smokeless Boiler, of which the following is a specification.

This invention has reference to boilers, and its object is'to provide a'smokeless boiler, which may be of the cast iron sec-` tional type, for house heating and other purposes.

The invention comprises a boiler which l resemble I-beam construction, with anextra web at the center. The rear ends of the top and intermediate webs are car ied downwardly at the rear, thereby producing elbow ducts, and these ducts may also be directed downwardly at the front t0 prevent liability of coal thrown into the lire chamber from passing into the refractory ilues. The result of the construction is that substantially or nearly horizontal flues are provided for the gases, these flues terminating at the rear ends in baflie walls against which the gases strike, thereby changing their courses. These bali'le walls are also heated to a Vhigh degree, thus causing the Vgases to be correspondingly heated to the burning point by Y coming in contact with the heated baille walls.

The construction avoids structural difliculties found in other flue constructions, permitting both the flue` andV baille to be installed or renewed together. Byslightly in-y clining the `flues they are held by their own weight from tending to fallV into the fire box.

The invention will behest understood from a consideration of the following de- Y tailed description taken in connection with the accompanying drawings forming part of this specification, with the understanding, however, that the invention is not confined to any strict conformity with the showing of the drawings but maybe changed and modified so long as such changes and modifications mark no material departure from the sallien-t features of the invention as expressed `in the appended claims.

In the drawings Figure 1 is a longitudinal vertical section through a boiler embodying the invention.

Fig. `2 is a section on the line 242 of Fig. 1.

Fig. 3 is a perspective view of one of the Hue `blocks constructed as in Figs. 1 and 2;

Fig. Ll is an end plate for association with a group of iiue blocks, such as shown in Figs. 1 and 2.

Fig. 5 is a section similar to Fig. 1 but less extensive and showing another form of flue block. v

Fig. 6 is a view similar te Fig. 2 but less extensive and illustrating the group of flue blocks ofthe structure of Fig. 5.

Fig. 7 is a perspective view of one of the flue blocks of Figs. 5 and 6.

Fig. 8 is a view of an end plate similar to the structure shown in Fig; 4 but adapted for use in conjunction with the flue block of Fig. 7.

Referring to the drawings, there is shown aboiler l which, in many features, correspends to lthe customary practice in boilers i of the typeV shown. The boiler 1 is provided with a fire chamber 2 and a combustion chamber?) separated by a bridge wall 4 arranged :for the circulation of water through it. This bridge wall has openings 5 therethrough, and back of the openings within the chamber 3 is a wall section 6 arranged for the circulation of water therethrough. Leadingv from the combustion chamber 3 on either side thereof are ports 7 opening into side iiuesS by which the gases of combustion are directed toward the front of the boiler Vat the top` of the sections and thence back through center lines `9 to the smoke pipe l0, all these parts being of usual construction and needing no special description.

Extending through the openings 5- in the is shlown in 3. Each flueblock 1-1 has a central web 12 with flanges 13 projecting oppositely from the walls of the web 12 flue structure or block.

through the length of the latter, said fianges 13 constituting the top portion of the flue structure 11. There are also intermediate flanges lt extending from the central web 12 in substantially parallel relation withV but shorter than the flanges 13 and at the bottom of the web 12 are oppositely directed flanges 15 still shorter than but parallel with the flanges 14. At what constitutes the rear edge of the web 12 are other oppositely directed vflanges 16 arranged in slightly obtuse angular relation to the flanges 13 which they join at the top of the The web 12 may be of rhombic outline and the flanges projecting from the side faces of the web may conform to such rlmmbic outline. Each. flange 111 terminates at the rear end about midway of t-he distance between the rear ends of the corresponding flanges 15 and the flange 16 in a substantially upright flange 17, whereby on each side of the web 12 there are defined two angular or elbow ducts 18 and 19 respectively. 1t will be .noted that each flue block contains the parts 0f the walls of a plurality of flues; t0 be more exact, each flue block has parts of three of the walls of four flues, the remaining walls of the flue being made up when the Y flue blocks are fitted together.

The flue or duct block 11 is of a cross sectional area to fit between the upper and lower walls of a passage 5 through the bridge wall and a suitable number of blocks 11 placed side by side will fill the passage 5, the end blocks having the outer ducts 18 and 19 completed by a plate or slab 20 of sufficient size -for the purpose and shaped similarly to the web 12. The blocks 11 have their major portion extended through the opening 5 and abut against that face of the baffle wall 6 toward the bridge wall 4 and the face of the flanges 16 toward the bridge wall may be provided with spacing ribs 21. The lower edges of the flanges 16 engage and rest on a step or rib 22 on the corresponding face of the baffle wall 6. This arrangement holds the flue blocks firmly in place after being once set and these flue i blocks may be removed or inserted by way of the fire chamber. r1`he slope of the block when in place and resting upon the rib or step 22 and against the baffle wall prevents displacement of the flue block. The slope of the flue block from the baffle wall toward the bridge wall is upward so that there is no tendency of the flue block moving into the fire box.

By the construction shown when the flue blocks are in place, the flue structure formed thereby comprises upper and lower rows of ducts which are angular in form, the inner ends of the ducts opening into the fire chamber and the outer ends opening downwardly into the combustion chamber.

In Fig. 5 and associated figures, there is shown a form of flue block differing from that of the preceding figures in that the forward ends of the flues through the flue block are curved downwardly.

The parts making up the flue structure of Fig. 5 and associated figures, are in the main similar to those of Fig. 1 and, where the parts are similar, the same reference numerals are used except each reference numeral is provided with the exponent a. The forward end of the web 121`has a curved slanting extension. 12b and the flanges 13a and 14a have forward downwardly curved Aextensions 13b and 11b respectively. The

forward ends of the flanges 15L are rounded, as indicated at 15b. Otherwise the parts correspond to similar parts shown in Fig. 1 and associated figures. The slab associated `with the flue blocks 11ad is best shown in Fig. 8 and there indicated as 20a with a forward extension 20" having a curved upper edge 20C at the forwardend and a slanting front edge 2Od corresponding to the form of the block as a whole.

The purpose of the structure shown in Fig. 5 and associated gures is to prevent too ready access of coal when thrown into the fire box.

1n both forms the hot gases of combustion from the fire box pass to the fines 18 and 19, or 18L and 19a as the case may be, and thence through the refractory flue blocks, ultimatel striking the walls 16 and 17, or 16a and 11a as the case may be. These walls soon become highly heated and in turn heat the gases striking them to the combustion point so that complete combustion takes place in the combustion chamber into which the gases are discharged downwardly because of the downwardly directed discharge ends of the flues in the refractory blocks.

1t is customary to provide the usual door to the lire box with means for the admission of air. The fiue structure shown in Fig. 5 and associated igures is advantageous in causing the mixture of air and gases in the fire box to approach closely to the incandescent fuel bed at the rear of the fire box before entering the flues. The purpose of this is to heat the mixture of air and het gases as much as possible, such heating contributing materially to good combustion.

The refractory flue structure is such that the flue structure fits freely, though snugly, in the opening through the bridge wall, and the downward trend of the ue structure, whereby it is held solely by gravity in the opening `through the bridge wall against liability of falling into the lire chamber, is a marked advantage.

.In the construction shown in the drawing, the flue structure is held in place, and from dropping into the combustion chamber, by vengaging' the wall section 6. It is obvious, however, that the flue structure may be held in place in the bridge wall 'by other means. The action of gravity on the rear end of the flue structure where it projects beyond the -rear of the bridge wall, imparts the de- -sired downward trend, and prevents the iiue structure from moving toward and into the fire chamber. What is claimed is 1. A 'boiler provided with a bridge wall between the re chamber and the combustion chamber and having an opening therethrough, and a liuc structure for gasesV of combustion, separate from the bridge wall and passed through the said opening, and having its major portion extended beyond the bridge wall into the combustion chamber and fitting the walls of said opening freely but snugly, said Hue structure being angular in form and having a series of angular ducts arranged in horizontal rows, and having a downward slant toward its rear end where it opens into the combustion chamber, whereby it has a normal trend toward the combustion chamber and is held by gravity against liability of falling into the fire chamber, and may be introduced through the opening in the bridge wall and removed 4e therefrom through the lire chamber without requiring any dismantling of the boiler structure.

A boiler pro-vided with a bridge wall between the fire chamber and the combustion` chamber and having a plurality of openings through the bridge wall, and flue structure individual to each opening for the flow of gases `of combustion from the fire chamber to the combustion chamber, each of said flue structures containing a series of fiues in horizontal 'rows and beingseparate A from the bridge wall. and free from fastening thereto, and introducible into and removable from each opening through the fire chamber side of the bridge wall, said openings and saidflue structures being so shaped relatively to each other that the flue structures are held from accidental movement into the fire chamber. K .Y 8. A flue structure for a boiler provided with a bridge wall between the fire and combustion chambers of the boiler,` said;

bridge wall havingan openingtherethrough,

. said flue structure comprising a series of blocks, eachblock being of a height to ocbeing introducible into the opening in the bridge wall and removable therefrom through the lire chamber without the necessity of disturbing or dismantling the bridge wall.

4. A flue structure for a boiler provided with a bridge wall between the lire and combustion chambers of the boiler, said bridge wall having an opening therethrough for the passage of the Hue structure, said flue structure -comprising a series of blocks, each block having a web with laterally eX- teiided flanges on the opposite faces thereof, the flanges of the adjoining blocks having edge to edge contact forming fines, and end plates contacting with the flanges of the `end blocks and forming flues.

5. In a boiler provided with a bridge wall between the iire and the combustion chambers, and another wall in the combustion chamber spaced away from the bridge wall,

a fiue structure for gases of combustion adapted to be lodged in the bridge wall and at the rear end engaging and supported by the second named wall, said flue structure slanting downwardly between the walls and having a downwardly directed elbow termination.

6. In a `boiler provided with a bridge wall between the fire and the combustion chambers, and another wall in the combustion chamber spaced away from the rear 0f the bridge wall and having a ledge thereon, a flue structure leading from the iire chamber and discharging into the combustion chamber, said flue structure comprising a series of flue blocks supported at the front ends in the bridge wall and at their rear ends abutting the second named wall and resting on the ledge on said wall.

7 In a boiler provided with a bridge wall between the lire and the combustion chambers, and another wall in the combustion chamber spaced away from the rear of the bridge wall and having a ledge thereon, a Hue structure leading from the fire chamber and discharging into the combustion chamber, said flue structure comprising a series of flue blocks supported at the front ends in the bridge wall and at their rear ends abutting` the second named wall andl resting on the ledge lon said wall, said flue blocks i having adownward slant from the bridge wall to thesecond named wall and an elbow termination where 4engaging the second named wall and resting upon the ledge thereon.

8. In a boiler provided with a bridge wall bers, and another wall in the combustion chamber spaced away from the rear of the bridge wall and having a ledge thereon, a flue structure leading from the fire chamber and discharging into the lcombustion chamber, said fiue structure comprising a series of flue blocks supported at the front ends 1n the bridge wall and at their rear ends abutting the second named wall and restmgon the ledge on said wall, said flue bloc-ks having a downward slant from the bridge wall to the second named wall and an elbow termination where engaging the second named wall and resting upon the ledge thereon, said flue blocks having downwardly7 directed forward ends entering the lire chamber.

9. A flue block for the bridge wall of a boiler, comprising a web with a series of flanges projecting from opposite faces thereof, said flanges extending from the forward end of the web toward the rear thereof. and of different lengths, and other flanges Joming respective ones of the first named flanges to form an elbow passageway through the flue block. v

10. A fine block for the bridge wall of a boiler, comprisinga web with a series of flanges projecting from opposite faces there of, said anges extending from the forward end of the web toward the rear thereof and of different lengths, and other flanges joining respective ones of the first named flanges to form an elbow passageway through the fiue block, the flanges at the forward end of the web having a downward trend to produce a like conformation of the passages at the forward end of the flue block.

11. In a boiler `provided with a bridge wall between the fire and combustion chambers, said bridge wall having an opening therethrough, a flue structure fitted in said opening and comprising' a series of flue blocks defining elbow flues therethrough leading from the fire chamber and discharging downwardly into the combustion chamber, each flue block forming longitudinal sections of said flues, which iues are completed when said flue blocks are fitted together side by side, and end plates engaging with the end l flue blocks and formino the outer walls of the end fiues of the flue structure and bearing against the end walls of the opening in the bridge wall.

12. A boiler provided with a bridge wall between the fire and combustion chambers and with another wall in the combustion chamber spaced from the bridge wall and having a ledge or support on the face toward the bridge wall, and a series of fiue blocks supported at tlie front by the bridge wall and opening into the fire chamber and at the rear engaging against the second named wall and resting upon the ledge thereon, the passages through the fiue blocks being directed downwardly at the rear ends to discharge downwardly into the combustion chamber.

13. A boiler provided with a bridge wall between the fire and combustion chambers and with another wall in the combustion chamber spaced from the bridge wall and having a ledge or support on the face toward the bridge wall, and a series of iue blocks supported at the front by the bridge wall and opening into the iire chamber and at the rear engaging against the second named wall and resting upon the ledge thereon, the passages through the flue blocks being directed downwardly at the rear ends to discharge downwardly into the combustion chamber, said flue blocks having their forward ends projecting through the bridge wall into the fire chamber and there directed downwardly.

14. A boiler provided with a bridge wall between the fire and combustion chambers and with another wall in the combustion chamber spaced from the bridge wall and having a ledge or support on the face toward the bridge wall, and a series of flue blocks supported at the front by the bridge wall and opening into the fire chamber and at the rear engaging against the second named wall and resting upon the ledge thereon, the passages through the flue blocks being directed downwardly at the rear ends to discharge downwardly into the `combustion chamber, and said flue blocks having the portions between the walls supporting them slanting downwardly to an extent to prevent the blocks from moving forwardly and falling into the fire chamber.

15. In a-boiler provided with a bridge wall between the fire and combustion chambers, the said bridge wall having an opening therethrough, a fine structure fitted in said opening and passed through and beyond the same into the combustion'chamber, said fiue structure having a series of (ngular ducts arranged in horizontal rows, the forward portion of the flue structure being curved downwardly into the fire. chamber with its end within the fire chamber inclined so as to prevent too ready access of coal thereto.

In testimony, that I claim the foregoing as my own, l have hereto affixed my signature.

EDGAR- C. WILEY. Witnesses: Y

F. B. STANLEY, L. V. SNAPP.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

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